/ Dictionary / Index R radial: Meaning and Definition of Find definitions for: ra•di•al Pronunciation: (rā'dē-ul), [key] — adj. arranged like radii or rays. having spokes, bars, lines, etc., arranged like radii, as a machine. made in the direction of a radius; going from the center outward or from the circumference inward along a radius: a radial cut. pertaining to structures that radiate from a central point, as the arms of a starfish. of, like, or pertaining to a radius or a ray. a radial engine; a radial pump. having pistons moving inward and outward from a central point or shaft:a radial engine; a radial pump. noting a bearing designed primarily to take thrusts radial to the center of rotation. of, pertaining to, or situated near the radius. acting along or in the direction of the radius of a circle: radial motion; radial velocity. —n. a radial section or construction. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: radial (Thesaurus) Radhakrishnan radial engine Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language